Erlang：在ets表中找到交叉点

[at, {other_place}, me],
[other_place, {place}, {other_place}]],
[at, {place}, me], 
[on, {surface}, {object}],
[small, {object}]

[[at, door, me],[on, floor, chair],[small, bannanas]]

[at, door, me]

[at, {other_place}, me]

{other_place}